It is therefore advisable to make the adjustment
while the pump is running and power readings can
be monitored.
REMOVAL OF ADJUSTABLE STATOR
The procedure for removal of an adjustable stator is
the same as that of a standard one, except it is
necessary to remove the clamp plates before the
stator can be twisted off the rotor.
This can be done by undoing the clamp screws;
then releasing the clamp plate by using the locking
screws as jacking screws to remove the clamp
plates.
Re-assembly will be done using the reverse
procedure.
2.15 MAINTENANCE OF WEARING COMPONENTS
2.15.1 ROTOR AND STATOR
The wear rate on these components is dependent
on many factors, such as product abrasivity, speed,
pressure etc.
When pump performance has reduced to an
unacceptable level one or possibly both items will
need replacing.
2.15.2 DRIVE SHAFT - PACKED GLAND
The wear rate of the gland area is dependent on
many factors such as product abrasivity and speed.
Regular gland maintenance will maximise the life of
the shaft. Replacement of both the gland packing
and shaft will be necessary when shaft sealing
becomes difficult to achieve.
2.15.3 COUPLING ROD JOINTS
Regular maintenance and lubrication will maximise
life of the joints.
Replacement of one or both joint assemblies and
possibly the coupling rod may be necessary when
wear is apparent.
It is essential to replace all the joint items with
genuine Mono parts to ensure maximum life.
2.15.4 FLEXISHAFT DRIVE PUMPS
With this design there are no wearing items to
replace in the drive train, however, if during routine
inspection the shaft is visibly damaged / distorted
or the protective coating is damaged, then this item
should be replaced to avoid unexpected
breakdowns.
2.16 MECHANICAL SPEED VARIATORS
Refer to the manufacturers instructions.
These machines require regular maintenance, which
typically includes weekly adjustment through the full
speed range.
3.0 ASSEMBLY AND DISMANTLING
Section 4 contains the steps to dismantle and
re-assemble the pump. All fastenings must be
tightened securely and when identified the
appropriate torque figures should be used.
3.1 USE OF ITEMS NOT APPROVED OR
MANUFACTURED BY MONO PUMPS LIMITED
The pump and its components have been designed
to ensure that the pump will operate safely within the
guidelines covered by the legislation.
As a consequence Mono Pumps Limited have
declared the machine safe to use for the duty
specified as defined by the Declaration of
Incorporation or Conformity that is issued with this
Instruction Manual.
The use of replacement items that are not approved
by or manufactured by Mono Pumps Limited may
affect the safe operation of the pump and it may
therefore become a safety hazard to both operators
and other equipment. In these instances the
Declaration provided will therefore become invalid.
The guarantee referenced in the Terms and
Conditions of Sale will also be invalidated if
replacement items are used that are not approved or
manufactured by Mono Pumps Limited.
DISPOSAL OF WORN COMPONENTS
When replacing wearing parts, please ensure
disposal of used parts is carried out in compliance
with local environmental legislation. Particular care
should be taken when disposing of lubricants.
Section 1, Page 6
Issued – December 2002
Installation, Operation & Maintenance Instructions
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